The greenhouse is an important part of facilities agriculture,also is one of the focus of the development of modern agriculture. Including temperature and humidity are the two most important environmental factors in greenhouse, nonlinear, strong coupling relationship between them, increasing the difficulty of greenhouse control. According to this complicated problem, this paper establishes a model of greenhouse temperature and humidity, studies a kind of model based fuzzy PID intelligent greenhouse control algorithm,and used MATLAB/simulink simulation platform, set up a simulation system. Results show that the control algorithm which solve the problem of strong coupling of temperature and humidity, and stable control of the greenhouse temperature and humidity. With a small amount of overshoot and fast convergence rate, etc. Satisfy the greenhouse nonlinear, big lag, multiple input, multiple output complex system control requirements.
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